Syringe cannula holder

Abstract

A syringe cannula holder having an outer sleeve with an external thread that receives an internally threaded nut. The nut has a passage that permits a syringe cannula to pass through so that when the syringe body is installed within the outer sleeve, the nut may be threaded onto the outer sleeve leaving the cannula exposed. The syringe is held within the outer sleeve by a retaining ring.

We claim: 
     
       1. A cannula holder for a syringe, comprising: a) a sleeve having a bore for receiving a syringe having a flange, the sleeve having an open, flared end and an end having an external thread opposite the flared end;   b) a retaining nut having an internal thread sized and shaped to be received on the external thread of the sleeve; and   c) a retainer sized and shaped to fit within the open, flared end of the sleeve and over the syringe flange for retaining the syringe within the sleeve.   
     
     
       2. The cannula holder of claim 1 wherein the sleeve comprises plastic. 
     
     
       3. The cannula holder of claim 1 further comprising a cannula assembly having an external thread that engages an internal thread on the end of sleeve. 
     
     
       4. The cannula holder of claim 3 wherein the retaining nut has a bore and the cannula assembly has an attached cannula projecting outward from the cannula holder so that the cannula is received through the bore on the retaining nut when the retaining nut is received on the end of the sleeve. 
     
     
       5. A cannula holder for a syringe, comprising: a) a sleeve having a bore for receiving a syringe having a flange, the sleeve having an open, flared end and an end having external and internal threads opposite the flared end;   b) a retaining nut having a bore and an internal thread sized and shaped to be received on the external thread of the sleeve;   c) a cannula assembly having an external thread that engages the internal thread on the end of sleeve; and   d) a retainer sized and shaped to fit within the open, flared end of the sleeve and over the syringe flange for retaining the syringe within the sleeve.   
     
     
       6. The cannula holder of claim 5 wherein the cannula assembly has an attached cannula projecting outward from the cannula holder so that the cannula is received through the bore on the retaining nut when the retaining nut is received on the external thread of the sleeve.